TURLOCK (CBS13) — An anonymous threat prompted a lockdown at Turlock Junior High School.

Turlock police say they were made aware of the threat on Tuesday morning.

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The exact nature of the threat has not been disclosed, but police say they are working with school officials on the situation.

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Everyone is safe, police say, but extra officers are on campus out of an abundance of caution.

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The lockdown was lifted later Tuesday morning.